Xylosandrus spinifer

Taxonomic history

Xylosandrus spinifer Smith, Beaver & Cognato 2020 (in Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630): 408.

Diagnosis

3.3 mm long (n = 1); 2.3 times as long as wide. This species is unique among all Xylosandrus because of the unmistakable pair of very large spinesspine:
an elongate projection of the exoskeleton that is longer than its basal width
on the declivitaldeclivital:
pertaining to the elytral declivity
summit.

May be confused with

Xylosandrus spinifer superficially resembles Diuncus spp. but can differentiated by the following characteristics: the basebase:
point or edge closest to the body; opposite of apex
of the pronotumpronotum:
'the dorsal surface of the thorax
has an elongate patch of dense punctures bearing a tuft of setae; the anterioranterior:
the front or forward; opposite of posterior
margin of the pronotumpronotum:
'the dorsal surface of the thorax
is evenly rounded, and the asperitiesasperity:
small flat denticle-like structures frequently arranged in rows or confined to specific areas
just above the margin are of the same size, rather than with a median, larger pair; the procoxae are separated; the posterolateralposterolateral:
'relating to end of the side part/portion
costacosta:
elevated ridge that is rounded at its crest, not necessarily with sharp appearance
does not form a continuous carinacarina:
an elevated ridge or keel, not necessarily high or acute
, but is denticulatedenticulate:
covered in denticles
.

Distribution

China (Hong Kong, Yunnan), Thailand, Vietnam

Host plants

unknown (Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630)

DNA data

Sequences available for COI and CAD.

COI: MN620104

CAD: MN620361